Internal-combustion engine of the two-cycle type



C. A. SAWTELLE.

INTERNAL COMBUST |0N ENGINE OF THE TWO-CYCLE TYPE.

* APPLICATION man Aus.|5. 191s. 1,333,635.

C. A. SAWTE'LLE.

INTERNAL coMBusTwN ENGINE oF'THE TwovcLE TYPE.

APPLICATION FILED AUG. I5. 1916.y

1,333,635. Patented Mm-.'16,1920.

3 SHEETS-SHEET 2.

Avl'arneyY l' A C. A. SAWTELLE. INTERNAL comBUsTloN ENGINE 0E THE TwocvcLE TYPE.

A APPLlcATToN ETLED Nufms, 19m. 1,333,635. Patented Mar. 16, 1920.

,Fien 5,

IZ glo e 3f I @xufj Inventar har ISIIWEZZQ a citizen*ofthe-Unitedfzfstates,

residing at Detroit, in theceunty of Wayneind State L@which the yfollowing Yisi-5m specicetionrefero. ,ence 1 f ei'l1g'l11,d therein tothe accompanying v th@ nature of enimpmvementnpon .Unseen-V u fuel tog-fthe `cylinderl willf be'eontroiied `byE fgimple, positively ,actuated mechemsm 'hay` 'in-g- :but @few partsend but-:a few movements; and this end-it fis a ,furthergob greaterportion ofjthe movement of the pisyton `nml will .be quicklyopened and elosed -V While thepiston is 01' meer'the-` innelfportion ofz-its stroke.V f

1 L itis also anlimportantfobieet `tion'` to provide meansjorregulating .movement the: controlling member to regulate the amount of fueldeliveredftothe cylinder upon rmeh ymovernent;of the'fpletll,

thuS'emt-'bling the engine jfto ,be .throitled down todevelop n minimum of kpower-'r` 4 Other objects ofthe invention Will-eppeer as-the r`mechanism is deseribezsd inoletii-fY In the :woompanying drawings Figure -1 isl n .vertical vsef'ntionel view f takenrcentrally through anfengineembodying my invention;

:the piston and the-controlling devies;l forrthe fuel linletinfsuooeirve positions.; Fig: 5 Vis n similar View' showing the actuatingdevee actuating device?,

for :the controlling member adjnshedgtoaflter the amount of flielfedmitted ntoffthefgengin cylindem'a-nd Fig. A-rils a detei View .ofthe 3 ln'fthese dm'twingel embodiment of my l.Invention @ud-beve shown theA es @googled in op Qligm hemel-#Gomme i mecter-f ,Mollmtedwthn is :e power @connected @by 'e feonnect-x `im; 7 with Ythe crank .shaft eiwhfih e?? tendstluough theecrenk Case The-W111i# ygfme fl'described )and --elaimed Vin the' Spplm- Y .non for iledfby me tomber 17m 1 #19.12, seri-a1 Number 726,197. o,

The :object oil-the invention Ais to: provide @Qms @Mosher-e show/hit, formed there- A)eet of the `:invention-to fuel':inletv :through piston and .to-provide yn slngle vSource `oi supply l lhis inletp-i's of such e character thatit een Y Assieme of' l WFTEeOFijPETI-Pmiemeleeeya 4r, -v f f 1 Y Yilmflfnmetingfiat its lower .end with.

`sourxz fuel supply through eninllet-port which, is oontrolled automatically 160 e puppet l e .actuated valve-ee; here shown. valve., lV-Atthe outer end'of rtheegvinder,and

preferably 'arrangedcoenti'aliythereof,is, 'it I Fb? 111911M11y'l0-sd. byfhelpiiston 6, but will oleared thereby inner-limit OfgfitAs-mgovement- Thle'seports f' CommuniGate with@ circumferentialconduit k.vithollzis, eonnejetedi atffone, or more pointe il. y ,with the "exhaust meHfiiFEOld-g.Preferblyg the f F ,fcolmetion mede ant-two pointsfarmnged on opposite sides 'of the. eylincrler,E nsshovvn l get lO, 'as thisprovides *a freer veich-enel;fof the burned-gases The operation of themeehanisni so :for Y Ydescribed is'. substantially thatof .,thejl-ordie nary tvv'ofcyole engine. Upon-:the Voutzxveud "85 stlokeoffthe piston af'qu'entity of fuellris drown into theolosed-orank-ese 2 wandjupon the inward stroke ,of the piston .this 'fuelv is :A vcompressed Within Ithe cranlljoaeegand te Vpiston approeehe the iin-11er A o f movement i5 admitted yto 'ylinder, thusr unit l of te forcine ont'the'lbumed ygrises fend Supplying, the .eylinder with *afresh Laberge of fuelV lwhich Jisfoompressed ,and exploded upon/fthe. next"outward-stroked the'pstom Y The .fuel inlet/forth@ cylinder-:1 is @referably' formed through'fthe eisten 6, after the fannnrnery shown in Ithe abovgmenjtioned. @pr

plication; Y flo` aoonnplish''this the piston fis providedwith an inlet',peseztge edapted to q1-0:0

communica/te' both With-the cylinderl and l f I withffthe vClosed frankicese, for other elviitable ki'orfivxlel under pressure.

bie controlled bye sing-1e controlling 1:05

v`loer which is actuated; insueh e, .manneriasvto meintaiuthe inlet ello-sed whilefthegpsftonfts 130.A i i i den-to permit a chargeV of fuel to enter the cylinder. Preferably, this inletis arranged ,v i'centrally ofthe piston and itis here shown4 is a lcontrollingmember, or valve,'which is preferably in the form of a supplemental piston 13.. This supplemental piston, or valve, is actuated by, andin timed relation to, the movement of the main piston so as to open"` and close the inlet at the proper times during the movement of themain piston. 'For this purpose I have provided an actuating devicewhich ispreferably mounted on the piston-"and connected with the supplemental piston,

or valve', 13., In the present. construction this actuating Vdevice is m'oui'ited on the pistonfor rocking move- .nected `ends on the piston at one .tudinal center ment and is connected with the controlling member' 18 and with a` fixed part of thex engine so that the movement of the main'piston will impart; a 'rocking movement to the actuating device, which injturn will impart reciprocatory moveme t to the controlling member. Preferably,'the actuating device is in'the form of alever, as shown at 14, con

at one end with the contro-lling member by means of a link 15, which is pivotally member and vat the other end with the` lever. This lever is pivotally mounted betweenits side o f thelongithereof and is pivotally connected at itsjopposite end "with a fixed part ofthe engine'.` This point of connection preferably nearfthe side wall of the. cylinder Vand the lever is here shown as Aconnected with a bracket, or arm, 16, extending vinto the engine nearfthe juncture of the cylinder with the crank case and beyond the lower arm is normally fixed against movement soV limit of movement of the main-f piston. This I that the lever turns about a fixed axis. The

leverfll.` ispreferably extensible vand 'is here shown ascomprising two parts, one of which isV slidably mounted upon the other, one of said parts being pivotally connected with thepiston and the other pivotally connected with the fixed-bracket 16. In the present "construction, that part 'of the lever which is `mounted on thel piston is provided with a fuid-evvay 17, in which is slidably mounted'fa iiodlS constituting theinner portion ofthe lever '14'. and pivotally connected with the arm` 16. This construction is such that as the 4main pistonfbegins its inward move- "mentthe lever will extend lengthwiseof the cylinder and at -a very sharp angle to the 'line of movement ofthe piston. Further,

bracket 16 will long distance.

or otherat one end with the controlling Y y creased 'on the'inward movement "and for `pivotal center .of the part .18..with the pivotal connection iiirst portion of;` the finward movement of the piston the controlling member will have but a very.y slight movement relatively .thereto. As shown in Figa-2 the crank shaft has inadea quarterv revolution on the inward stroke of the piston and it will be 4noted that only a very shor'tinovement hasl been yiinparted to the controlling member, relative to* the piston. y During the further movement of the pistonthe relL tive movement of the controlling member is greater, `but the inlet vis maintained Vclosed. until the piston approaches Athe inner limit of its movement and until'the exhaust ports havebeen opened,

as `shown in Fig, 3'. 1' After the main piston is moved inwarda distance @sufficient to vopen the e'xha'ustports,

thusl fully Fig.

opening the'inlet,fas shown in through' the exhaust ports. The inlet port 'remains Vopen while the crank shaft crosses `p istor i,pthe.l movement of the controlling` member relative to the ,Y piston decreason the outward movement `of the ing rin l the. samel ratio 'that it inpiston the controlling member is Vvery quickly moved-:to its innermost position relatively to the main piston,

4,' and `permitting the fuel to enter-themain cylinder through the'inlet'and to forceV the exhaust gases out of that cylinder of the pisbe spaced apartafrelatively Y Consequently, during the ton. In `this manner I amenabled toinain- Y tain the fuel inlet closed 'during the greater portion of this stroke of the piston and to quickly open Vand close the same at the proper time by the use of-a very simple mechanism which is-positive in its` operation and hasits few parts of. such a character that there' is littlev orno liability of their becoming disarrangedso as to interfere with the proper operationl of the engine. Further, the parts are of such a character that they can be very readily .manufactured at a low cost.

l Heretofore perienced in tlirottling a two-cycleV engine this reason they have been generally considered as unsuitedV for certain purposes. With the constructionV above dcscribed V a simple matter. By shifting-'the point of connection-of the actuating device `with the fixed .part

vice can beregulated, andconsequently, the

size of the fuel inletcan be so controlled as justable and itis hereshown as .mounted `much difficulty has been ex-- the throttling of the engine becomes y of the engine the amount of Amovement imparted to the controlling dei point of.` connec'tionxfor the actuating device.

kshown in Figs, l.to-'.4,the cmitrollingdefV vice ivill be'inovedfzbo its `fully 'openedg posi-'1v tlon, as shown Vin Fig 4;*1Byjshifting1tlie. .arln to the position-shownwatc.Eig..x5,. the

movement fof .the controlling lneriiber will be so shortened that whenlthe pistoni. is in its innermost' position.` the controlling linem- .ber will-have been movedbut a short `dis.-

" @tance zpast the louter edge o-thejportsfin A,the sup'plem'er'ital cylinder, thus providing .only a fslna'll opening through f.which a cor-` respondingly small amount .offuelcan enter -tlie cylinder. lIn the caseof-ia multiplecyb 'inderengina the sliaift19 will extend alongside off'the.-several.cylinders andthe supporting-*arm `16k for y eachj .cylinder will lie vsavrneezdzent. {It-Will Vbe Aoloviousfthat the y.ad-

uses, such as marine purposes. iIf applied ,to an automobile ienginejthe actuating'device :for .the shaft would Ybe extended so that Y it could beioperated rby the .driven fiom 'his seat.. Further, :the .present u sting device is adapted: to adjust the. actuating Adevice .to

va comparatively `few positions, ,but thisis .in nia'ny instances ,preieraole as .the .ordinary- Y, ithiottle valve 1 in fthe V.intake 'manifold may be f retained and ,used-in )connection here.-

. YVhil'ef I have shown jand fdescribedone Y embodiment of my invention,f;[f wish `itto be understood that vrI dol not .desire to'zbe limited. -to 'the .details lof L .construction here shown as variousinodifications Will-v. occur .to` a person skilled intheart. f"

, 'Having 110W I, fully4 described: :in-vena; tion,

what-I claim #as new, .and .to sei .cure 'Letters-Patent,:is:V Y

' of `fuel supply, a YInerifiberiloecontnol said Llet, and an actuating level'v havingseparate fconnections with? saidjpistonfand lWitlijls'aid controlling member and ,controlled `by the movement of said .piston to maintain'said Vcontrolling' fmember in a` positionV tolclose saidV inlet during vthe firstA portion ofthe power strolu;:of-:said pistonA and :to ,move sad ccntroiling into-a nositionrto stroke of said piston.:

open-said 'inlet during the lastportionof i i V 4thepower stroke vofsaid piston.

2. Inflan`r` engine.,r a .xcylinden .Y afpiston inlet `adapted :to` connect fsaidc'ylinder with mounted in said cylinderfand having a yfuel.

a source'. of yfuel supply,l,a `.controllinginem- 1 vber.carriedby,said piston and having niovej nient to control. theQfloW; of fuel through said inlet, ajlever separately-,connected-Withfsaid pist-onf andj said controlling .member f1 actuated VVbij/7 1.said;piston .to move sajdpconf. .trollingmember .into a position toclos'e `said .inl'et- Vand 1to'niainta'in the same in such position*.duringithefirst portion of theI` power stroke,of the piston andto move. said, controlling ineniber into a yposition to open'Y said inlet during thelast; .pajitoif' the power Y In aneng1ne,`;.a-" cylinder, a f'piston l mou nted insaid-cylinder @having a fuel 185 inlet adapted to 'connectisaid cylinder with .az source "of `supply.fforfueL- ra single memT pber to control saidQiIilet, andv an actuating..

ofysaidgpiston, in eitherdirectiomein :the

r outer portion` lo1". fsa-id. cylinder Will impart 'slow movement to lsaid ..meinben :andY the vmovementof .saidpstomjin eitherdirection, 1justment of the actuating device may be sel .cured in any suitable manner-,hut the ,lever shovvnin the presentinstanee is `Well adapt! ed for :the .engine'fwhen' .applied lto .certain .in .the-innerl portionf of said 'cylinder will impartrapid movement tosaid member. e

4.,In-.;anfengine, cylinder, a piston .devi'ce forf'said mernberconnected with saidv vpiston `and so .arranged .that vthe movement .connected thereto so'v that the "movement of 'i :fthe4 actuating.'lever"- 20 will simultaneously- =-adji1st theiseveral actuating devices to 'the sure, a Slide vaglvefto :control said. passage,

4and means .controlled bythe -inovement' o'fy said piston to n'iaintain' said slide valvegin Y V ,i a'position to close' the .ports ofI said passage AWhile ksaid piston in the outer portion of?. *said cylinder and toimove said slide valve rintoQaLposition .to open` saidfports when jsaidpistonis linthe inner'.r portion of said .oylndcrav i' '5. In anv engines-,a "Cylinder,4 a piston l,mounted yinv said. cylinder 'and having a `fuel inlet fto. connect said cylinderfivith a source pif-fuel supply, ,al crank shaft, a ,connecting rod to connect Vsaid .piston VWith y said. .crank Vsha-ft,afcontrolling' member carried .bysaid 1.15`

Vpiston and having lmovement to .controlthe r cont-rolling member, f and j operatively con-V nect-'ed Vwith ,saidV controlling vniernloer and -jcOPeIating with. a relativel-yffixed part of v. i

Ssaidf- 4 fen.' inernber. Y I y .6p-*In anien'gme, a cyllnder, a piston vniounted inzsaid cylinder .and having afuel inlet .adaptedgto `communicate vwith saidl .flow of. fuel...throitghjfsaidl inlet, .and lan actuating device mounted l.on said pistonlin- .dependently of said connectingrodpand ysaid 'a gine to'actuate-said controlling.,

` fuel through saidinletfand a pivoted actuating device connected With said controlling member and with a relatively fixed'part of the engine,.and arranged to be actuated by the moveme'antof said-piston to impart movementV tosaid controlling member.

- `7. In an engine, a cylinder,` a piston mounted in said cylinder and having a fuel inlet.A adapted topcommunicate with said cylinder and with a source vof-fuel supply,

a controlling member carried by saidlpiston Vand having movement to control the-flow of fuel' through said inlet, and an actuating Y device mounted on said `piston for Vrocking movement and connected Wit-lr said controlling member and with a rclativelyfxed part of said engine, whereby the movement of said piston `vill causesaid actuating device" to-` be rocked` and .operative movement to be `imparted to said"` controlling member.`

I 8. In an .engine, a cylinder, a piston:

mounted in said cylinder and having a .fuel

iiilet adapted to communicate vvithsaid cylinder and'with a source of fuel supply, a controlling member` carried byisaid piston andfhaving movement to control lthe flow of fuel through said inlet, and an actuating l inlet adapted to communicate With said cylinder and with a source of fuel supply, a controlling member carried by said piston and having movement to control the flow of fuel through said inlet, and an extensible lever pivotally mountedon said pistonand connected with said'controlling device Yand with a relatively fixed part` of said engine,

Vwhereby the movement of said piston Will impart pivotal'movement to said lever and v `cause said controlling-member to be actuated.

`10. In an engine, a cylinder, a piston mounted in said cylinder and having a fuel inlet adapted to communicate Vwith said cylinder and with a source of fuel supply,

a controlling member carried `by said piston and having movement to control the ovv of fuel through said inlet, and an' actuating device pivotally mounted on said piston, connectedv with saidl controlling member.,` and 'having an extensible portion pivotally conjnected with a' relatively fixed partl of said engine. Y l

vll. In an engine, a cylinder, a .piston mounted in said cylinder and having a fuel inlet adapted toV communicate With said cylinder andwith asource of fuelsupply, a controlling member carried by said piston and having movement to control thev HOW nected with a offuel through said iiilet,-`and an actuating device lpivotally mounted on said piston and connected With said controlling member and comprising a slidable part pivotally conrelatively fixed part of said' engine. u Y l l2. In'an engine, a cylinder, a Vpiston mounted in said cylinder and having a fuel inlet adapted to communicate With said cylinder and with a source of fuel supply, a`

controllinglmemberlcarried by said piston and having movement to ucontrol the flow of fuel through said inlet, and an actuating ldevice pivotally mounted on said'piston, coii- `nected with said. controllingmemberv` and having a movable: part pivotally connected l with a-ielatively fixed partof said' engine. whereby the distance betvveenthe points of connection .of saidrdevice with said piston and Withisaid lengine Willvary as saidpiston moves in its'cylinder. l

j 13. In` an engine, a cylinder," a piston mounted in said cylinder and having a fuel inlet adapted tof communicate "with said cylinder and With a source of fuel supply, a

controlling. member carried" by `said piston and having movement to control the flovvA of fuel through said inlet, Vandan actuating device pivotally mounted onsaid pistonat one side of the longitudinalcenter thereof and connected with said controlling member, said actuating device having extensible means for connecting the same Witha relatively fixed part of said enginef 14C. InV an engine,` La cylinder, a piston mounted in 4said cylinder andhaving afuel inlet adapted'to communicatczvvith saidv cylinder and with a sourcev of fuel supply, a controllingmember 'carried by saidpistoii andlha'ving movement to control the flow of Vfuel through said inlet, and an actuating device pivotally mountedon said piston atone side' of the longitudinal center vlthereof and connected With a relatively fixed part of said engine, uthatpart of said device between its points of connection With said piston and .with said ixedtpart being extensible to accommodate it to the movement of the piston,

and means for connectingsaid device `vvith said V controlling member. if A i v 15.- In an fengine, `a cylinder, va piston -mounted in said cylinder and having a fuel Y inlet adapted to coimiiunicate With said cylinder and vvith a sourceof fuel supply, a

`controlling member carried by :saidlpiston and `having movement to 'control' the flowV of fuel-through 'said inlet, and an'- actuating devicepivotally mounted on said piston and 'i connected 'on one side of its axiswith said controlling member and having on the other side of its axisvan extensible part pivotally connected with a relatively lixed part of said engine.

l 16. In Van engine, a' cylinder, a piston mounted in said cylinder and having a fuel 1ero V cylinder andv withfa/ sourcei of.A .f-uelfy sugpl'y, i a controlling member carried,byfsail.v piston" and having movement to control theffliow of fuel through sa'idY inlet, an actuating dee-fl vice' comprisingv two parts slidably vvctfinnected Y onewith the othenone-of'saidparts being v controlling membercarried by said piston pivotallvv mounted on said piston-andthe other o said parts beingpivotallyyennectedwith arelativelyii'xed'rpart 'of said en-l Y f 'ginegV and a connection between saidjacti'iat v controlled bythe lmovement-of said piston to actuate said controlling member, vandineansiv ing device and said controlling member.

Y I?. In an engine,'zi.f"cylinder,` api'ston ymounted in' saidccylinder Vand having a fuel' :j inlet adaptedV to communicate with, said cyl inder and with a source of fuelsupply, a

andihaving movementto control theflow of fuel` through saidinlet, and a lever comprising tvvo parts one of vvliicliisv pivotally Vmounted onpistonfand l' is connected with said controlling member, and the,I

v other ofYWhichY isslidably `connected 'with the rstmenti'oned part vand is *pivotally connectedfwith a Vrelatively fixedy part of-v saideng'ine. *n y '18; In 1an engine, a cylinder;-

pistonl mounted in saidv cylinder and havinga fuelV inlet adapted to communicate `withl said cylsii inder and With'falsource of fuel `supply,a

y controlling member carried by saidpistonpandl having movement to control the iiovv of fuelithrough saidinlet, and anactuating le` f' A vercomprising a part pivotally mounted lon e5A said piston, connected with saidrontrolling member and having ,a guideivay, land also l comprising a second part vslidably mounted in said vguidew'ay and pivotally connected Y -fu'elthroughy saidinlet, an'actuating lever 'comprisinga part pivotally mountedo'n said piston at one side of the longitudinal` centerl with a relativelyixedpart o ffsa'idengine; 19. In an engine, a cyli'ndeignypiston mounted in said cylinder and having a fuel f inlet adapted to communicate with saidcyl`V ind'er andV 'with a source ofl fuel supplya controlling member carried -Yby- 'said pistonand having movement .to control the flowof thereof-.andhavin'g one end exten/ding to a ,point'nearfthe longitudinal center 'of' said piston',` andy also comprising a secondpart slidz'iblyconnected with the-rstk-iiientionedy partand'pivotally mounted on ka vrelatively l trolling member. f

fixed partrofsaid enginel and a link conf necting said en d of said lever with said conn Inan engine., a Vcylinder,V a piston I mounted infsaid cylinder and having' a fuel inlet adapted to communicate with said cyl- Y 6l)V inder and with asourc'e of ffuel supply, a controlling member carried'by said piston Y and having movement to control theflowv of fuel through said'inlet, an actuating devicel `Within saidV engine. to impart` movementY to said' -'controlling membe'rin timed reltion; to themovement of said piston, *andvr means arranged exteriorly v of said engine f to' regulate the,movementimparted 'to said con-,1Y n

trolhngjfm'ember by said actuating device.V

i 21j-Iman engi1ie,' a fcylinder, apiston mounted in said' cylinder and having Ia fuel inlet'iadapted'to communicate with saidfcyl-V inderand with a sourcel'of fuel supply,` a

vcontrolling member carried by ysaid piston yand having movement tofcontrolthe fiov'v lof fuelthrough said inlet, an actuating deaiice inlet adapted tofcommunicatewith said,

cylinder andl Withfa` source-,of fuelY supply, a controlling-'member carried byfsaid piston andV having movementto control the'flowv of fuel through said linlet,"an actuating device mounted on said Vpiston andl connected vvitli...

said controlling fm'ember-V and vvithL a relaitivelyiixed part'of -said engine', and means` amount "of movement imparted to 'said con trolling member. .Y f

23; In' an engine, acylinder, va piston' mounted in 'said'cylinden andl having fuel inletV vadapted to communicate with said cylinder and With a-.sourcerof fuel supply,

a controlling member lcarried by said'lpiston and yhaving movement to controll the flow ofi-fuel through said inlet,` an actuating pivotally' connected withA said controlling Ato adjust the pintof'connection'withsaid* yfixed part ofsaid engine to regulate the device pivotallymounted onsaidvpiston2 and saidengine, and means to varythedistance* u betweenthepoints of connection;lofsaid"y y device with.said-pistonand Withsa-id fixed partfoffsaid engine toregulate theframount of vmovement A imparted 'to said controlling at piston mounted in saidV cylinclerand'liavingja fuel inletY adapted 'to'v communicate avitli said cylinder and With 'asource of fuel sup} iljy,l a

pivotally' mounted on said piston and Vconnected `With said controlling me'mber, said devicehaving.v an extensible partfconiiected controllingjmember 'carried by lsaid ipiston Vand having movement to. controllthe flow of Y fuel through'fsai'd*inlet, van actuating vdevice 1 Withza relatively fixed `partei said'k engine.`

whereby the movement of vSaid piston will movey said actuating device about its pivct and means forV adjusting tliepoint of connection'of said extensible part of said device with theL iXed part ofsaid engine.

l25.111 yan engine@ ajcylind'er; fa piston Y mounted in Ysaid"cylinder an'd'having a`=fuelA inletfadaptedy to" communicate withf said" iso cylinder and with a source .of-fuel supply, a controllingmember carried bysaid piston and having movement to control the ioW of fuel through said inlet, an actuatingdevice l pivotally mountedlon said piston, connected With said 'controlling member and {having anzextensible part-,pivotally connectedvvitli Y position of said bracket. y

anormally fixed part vof said engine, and

Y means arranged eXteriorly ofl said V engine to adjust said normally fixed pointlof connection. n, Y, A I v V26. In an engine, a cylinder, a piston mounted in saidl cylinder and having a fuel of said device, and means Vfor shifting the 27. In an engine, a cylinder, a piston mounted in said cylinder `and havinga fuel inlet adapted' to communicate with saidv cylinder and With a source of fuel supply,

a controlling member carried by said piston and having movement to control, the flow of fuelthrcugh saidinlet, an actuating device pivotally mounted on said-piston and con,

nected with Vsaid controllingv member, a bracket pivotally mounted on said engine i and having apivotal connection with said actuating device, and means' for rocking said bracket about its aXis and for lockingV `the same inadjustedpositions.'

28.-,In an engine,}a cylinder, aV piston mounted in said cylinder and having a fuel inlet adaptedV to` communicate with said cylinder and with a source of fuel supply, a' controlling' member carried byvsaid piston and having movement to ,control the flow of fuel through said inlet, a tWo-partrlever having one part pivotally mounted on saidv piston and connectedl with said controlling member and having its other part slidably connected with the first-mentioned part,` "bracketpivotal-ly mounted on said engine and-havingpivotal connection Withthe last- Y ,inentionedpart of said lever, and means for.

moving saidv bracket aboutitsaxisand for locking the same in its adjusted. positions.

.2Q-In anengine, Aa main cylinder, a main piston mounted in said cylinder and having 'p a supplemental cylinder communicating with said main v cylinder and adapted to be connected With a source of fuel supply, a supplemental piston mounted in said supplemental cylinder 'to control the flow of fuel Vfrom Vsaid source ofA supply to said r main cylinder, and an actuating device conl nected AWith Vsaid supplemental pistonand with aV relativelyxedspart of engine,

andarranged toA be actuated byl the move ment of said piston to actuate said supplemental piston.-l

30. Inanengine, a main cylinder, a mainv i' pistonmounted in said main cylinder andl havingl a supplemental cylinder communicating 'with the main cylinderand adapted toV be connected with a source of fuel supply,

a supplemental piston mounted in said supplemental cylinder to control `the passage main cylinder, and an actuating device piv-` L Y of fuel from said sourceV of supply to said l otallymounted on said main piston, connected with said supplemental piston and with a relatively iiXed part of said engine.`

3l. In an engine, a main cylinder, a main piston mounted in said main cylinder and having a supplemental cylinder communieating with the main cylinder and adapted vto be connected With a source of fuel supply,

a supplemental piston mounted in said supplemeiital cylinder to control the passage of v fuel from said source of supply to saidmain cylinder, `and a leveipivotally mounted on saidV piston at one side of the longitudinal center thereof, pivotally connected With said supplemental lpiston and having an eXtensible partpivotally connected vvith a normally iiXed part'of said engine. A

32. In an engine, a main cylinder, a main pistonmoiuinted in said main cylinder and having a supplemental cylinder communieating iviththe main cylinder and adapted tothe Vconnected with a source of fuel supply, a supplemental piston mounted in said supplemental cylinder to control'the passage Aof fuel from said source of supply to said main cylinder, a two-part lever having one'part` pivotally mounted on said main piston and pivotally connected with 'saidv supplemental piston, and having its other part slidably connected With the rst-mentioned part and' pivotally connected With a relatively lined Vpart of said engine. Y Y,

33.y In an engine, a main cylinder, a main.

piston mounted insaid main cylinder and having a supplemental cylinder communi- A eating with the main cylinderl'and adapted to be connected With asource of fuel supply,

al supplemental piston mounted in said supplemental cylinder to control the passageV of fuel froinsaid source of supply to said'main Vvcylinder, `a tWo-part lever havingcne part Y Y pivotally mounted onisaid'mainpiston and,`

pivotall7V connected ivith said supplemental piston, andjhaving its other.V part slidably' connected Withthe first-mentioned part and pivotally connectedivitli a relatively fixed.

part Vof saidengine, and meansto adjust the point of connection with saidV relatively fixed "part ofV said engine. v v

In testimony whereof, I affix my signature Y hereto. j

CHARLES A. snWTELLn. 

